WordPress如何阅读评论行

Question

在WordPress中,注释行用于查找主题摘要,插件摘要,模板名称等.

例如:-

<?php
/*
Template Name: Snarfer
*/
?>

WordPress如何做到这一点？用什么代码来读取注释行.

Answer 1

这是在函数get_file_data中完成的,wp-includes/functions.php关键代码部分是这样的:

    foreach ( $all_headers as $field => $regex ) {
            preg_match( '/^[ \t\/*#@]*' . preg_quote( $regex, '/' ) . ':(.*)$/mi', $file_data, ${$field});
            if ( !empty( ${$field} ) )
                    ${$field} = _cleanup_header_comment( ${$field}[1] );
            else
                    ${$field} = '';
    }

例如,对于插件,它wp-admin/includes/plugin.php在函数中引用get_plugin_data:

$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );